CN103887812A - Wind turbine having a HTS generator with a plurality of phases - Google Patents
Wind turbine having a HTS generator with a plurality of phases Download PDFInfo
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- CN103887812A CN103887812A CN201310626358.0A CN201310626358A CN103887812A CN 103887812 A CN103887812 A CN 103887812A CN 201310626358 A CN201310626358 A CN 201310626358A CN 103887812 A CN103887812 A CN 103887812A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/40—Synchronising a generator for connection to a network or to another generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/028—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
- F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K55/00—Dynamo-electric machines having windings operating at cryogenic temperatures
- H02K55/02—Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type
- H02K55/04—Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type with rotating field windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
- H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
- H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/493—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/22—Multiple windings; Windings for more than three phases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Control Of Eletrric Generators (AREA)
- Wind Motors (AREA)
- Superconductive Dynamoelectric Machines (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention relates to a wind turbine having a wind turbine tower with a nacelle provided on the top to which a rotor hub with one or more wind turbine blades is rotatably mounted by a rotor shaft. A generator is arranged in the nacelle, wherein the superconducting rotor coils induce a current in the stator coils when the rotor is rotated, and wherein the stator coils are arranged in at least four phases. One or more converter modules convert the power output from the generator so that it matches the power of a power grid. The generator side of the converter modules comprises a number of rectifying circuits equal to the phases in the generator, while the power grid side comprises a number of inverting circuits equal to the phases of the power grid. This allows the transient of the electromagnetic brake torque relative to the nominal electromagnetic torque of the generator to be reduced. The ripples of the electromagnetic torque are also reduced since the switching frequency of the converter is increased. This in turn reduces the mechanical stresses occurring in the drive train in the event of a failure or error occurring in one of the converter modules. The present invention also relates to a method of operation of such a wind turbine where the defective converter module is selectively switched off and the wind turbine is put into operation again at a lower operation level.
Description
Technical field
The present invention relates to a kind of wind turbine, comprising:
?wind turbine tower, it has top and bottom;
?cabin, this cabin is arranged on the top of wind turbine tower;
?rotor hub, this rotor hub is rotatably mounted to cabin;
?one or more pieces wind turbine blades, this wind turbine blade is arranged on rotor hub, wherein wind turbine blade is determined Plane of rotation;
?axle, this axle is attached to rotor hub;
?generator, this generator is attached on axle, wherein this generator comprises rotor, this rotor relative stator rotatably arranges, wherein this rotor comprises at least one superconductive rotor coil, and this stator comprises at least one electric-conduction subcoil, in the time of rotor, this superconductive rotor coil and this stator coil are set to have interactional magnetic field to cause stator coil generation current; And
?at least one transducer, this transducer is electrically coupled to this generator, wherein this transducer comprises electrical network end and generator end, this electrical network end is electrically connected to generator end, this electrical network end is set to be electrically coupled to the electrical network with pre-determined network code, and this generator end is set to be electrically coupled to this generator, wherein this transducer is set to the power output of conversion generator, make this power output mate the power of this electrical network, and stator coil is wherein set in generator to form two covers or to overlap stator coil to reduce the transient electromagnetic brake torque of relative generator nominal electromagnetic torque more, wherein every suit forms the predetermined number of phases.
The method that the invention still further relates to operation wind turbine, wherein the method for operation of this wind turbine comprises the following steps:
?use one or more measuring units to detect the mistake of wind turbines, this measuring unit is electrically coupled to the controller that is arranged on wind turbine inside;
?open switching device shifter, this conversion equipment is electrically coupled to the transducer in wind turbine by controller, makes this transducer isolate from electrical network;
?open variable propeller pitch device, this variable propeller pitch device is attached at least a portion of wind turbine blade, and variablepiston blade-section is met to air intake direction.
Technical background
As everyone knows, wind turbine now comprises cabin, and this cabin is attached to rotor hub and wind turbine blade, is provided with generator and transducer in this cabin.This generator converts the mechanical energy of armature spindle to electric energy, then goes to transducer.This transducer is attached to electrical network, and the electric power output of generator is converted to the electric power output matching with electrical network.
Up to date, use permanent magnet generator (PMGs) just known in wind turbine, wherein wind turbine is being improved aspect size and power output in recent years.The generator that this means wind turbine also must increase size and weight, and this causes generator more expensive and be more difficult to when mounted operation.Due to more than wind turbine power increases to 6 megawatts, conventional electric generators or permanent magnet generator, due to its desired size and weight, are no longer applicable to so large-scale wind turbine.Massive generator like this will mean significantly reinforcement of wind turbine tower, and/or because the elevating capacity of the crane for mounting wind machine is limited, generator must be installed by part.
In recent years, high-temperature superconductor can have been bought on market, makes the wind turbine generator (high-temperature superconductor (HTS) generator) of latest generation for larger wind turbines.Understand the problem of permanent magnet generator and want that the those skilled in the art that improve larger wind turbines generator designs will trend towards using high-temperature superconducting generator to replace.
Such high-temperature superconducting generator increases the current density of stator coil greatly, and this power density that means immediately generator also increases.This reduces the size of high-temperature superconducting generator and weight, and keeps high-output power simultaneously and reduce the cost of this type of larger wind turbines.By using direct-drive can further increase stability and the maintenance period of power train, this direct-drive replaces gearbox and connects, and is attached to rotor hub, and gearbox connects the mechanical stress impact being subject in fitful wind and power train.
High-temperature superconducting generator generally includes three-phase, and this three-phase can cause high-intensity magnetic field at generator, and this is because the high current density in rotor coil can form strong electromagnetic torque successively on rotor and armature spindle.British patent 2416566A discloses a kind of wind turbine, and wherein high-temperature superconducting generator is attached to rotor hub.Then, this high-temperature superconducting generator is attached directly to transducer by three phase coupler.Transducer comprises being attached to the rectification unit of generator and being attached to and uses the rectification circuit of three phase network, and wherein direct current connects and is arranged between rectification unit and rectification circuit.Xiaohang Li " superconducting apparatus of wind energy turbine set " discloses similar wind turbine, and this wind turbine has hybrid power transmission system, and this system comprises the simple gears system that is attached to high-temperature superconducting generator.High-temperature superconducting generator is connected to transducer by three-phase coupling, the phase of this three-phase coupling coupling electrical network.
These structures have following shortcoming, and in the time detecting that transducer lost efficacy, for example at least one insulated gate bipolar transistor is short-circuited, and wind turbine must stop the operation of drive system and the rotation of wind turbine blade.Short circuit will cause that generator starts braking torque, this braking torque than the normal moment of torsion of generator large 9 ?10 times.Due to the abrupt deceleration of rotating parts, this can cause the badly damaged of drive system, particularly generator, armature spindle, rotor hub and wind turbine blade.
When those skilled in the art want that when using high-temperature superconducting generator to improve for the generator of larger wind turbines, this problem has occurred, because permanent magnet generator is because same problem can't appear in the relatively low current density of its stator coil.
United States Patent (USP) 2009/0295168A1 discloses a kind of wind turbine, and this wind turbine comprises the superconducting generator of the rotor assembly with field frame assembly and relative stator setting.Field frame assembly comprises that several form the double helix winding of stator coil, and this stator coil is connected toward each other and formed 6 or 12 phases.How the not mentioned multiple phases of this file are attached to the remainder of Wind turbine drive.
Deutsche Bundespatent 4032492A1 discloses a kind of motor, and it comprises by converting unit, and this converting unit is attached to the generator with at least two group stator winding by switching device shifter.This switching device shifter is for selecting to form the different structure between some stator winding of stator coil.When switching device shifter disconnects, each group is synchronizeed and is formed at least three-phase with other two groups.When opening switching device shifter, each winding is combined to form the mixed structure with 6 or 12 phases.In this structure, every group of stator coil is attached to same converter unit, and wherein switching device shifter is for controlling the number of phases between generator and converter unit.
Goal of the invention
The object of this invention is to provide a kind of electric generator structure, this electric generator structure reduces the electromagnetic braking torque of generator.
The object of this invention is to provide a kind of electric generator structure, this electric generator structure make short circuit current and not the impact between homophase all can reduce.
The object of this invention is to provide a kind of electric generator structure, this electric generator structure reduces the fluctuation of electromagnetic torque.
Summary of the invention
Object of the present invention realizes by wind turbine, it is characterized in that:
Transducer comprises two or more conversion modules, and this module comprises generator end and electrical network end, and wherein the generator end of each module comprises several rectification circuits, and this rectification circuit is electrically coupled to the wherein a set of stator coil being arranged in generator.
This makes when detecting that transducer lost efficacy, and for example when insulated gate bipolar transistor short circuit, the electromagnetic torque that generator starts reduces.In the time such inefficacy being detected, wind turbine will be carried out emergence program, and wherein rotating parts stops within some turning.This set will reduce the mechanical stress of drive system significantly, for example armature spindle, rotor hub and wind turbine blade place, otherwise may during this program, cause wind turbine to lose efficacy.Electrically connecting between generator and transducer is set, makes it more than three-phase, for example 6,9,12 or more heterogeneous.Generator can be set, make stator coil discriminably with the several connections corresponding with the number of phases or the form setting of winding.Stator coil can be electrically connected to several terminals or be positioned at the switch unit of generator, and this switch unit can change the number of these several connections or winding and phase.Compare conventional electric generators, this is distributed in more electromagnetic torque to go up mutually, so reduced the alternating current by every phase.This also makes the fluctuation of electromagnetic torque significantly reduce, and this is because the switching frequency of transducer significantly rises.This reduces the stress of the rotating parts during full and down successively, and has improved the reliability of drive system.
This structure makes transducer be arranged to omnidistance transducer, thereby allows wind turbine to move under peak power output, and the better control mode of meritorious and idle power output is provided.This makes wind turbine be specially adapted to be attached to intelligent grid.
The instantaneous value that electrically connecting between electricity generator stator coil and transducer rectification circuit can be set to reduce brake torque to generator nominal torque 100 ?between 800%, be preferably 200 ?between 600%, more excellent be 200 ?between 400%.This makes generator in the time of insulated gate bipolar transistor short circuit, and the electromagnetic torque of startup is decreased to acceptable level, and the stress that wherein imports drive system can not cause the inefficacy of wind turbine.
Stator coil can arrange two or more sets, and for example 3,4,5 or 6 groups, every group can comprise at least two-phase, for example 3,4,5,6 or even 9 phases.Each of every group is determined winding mutually, and this winding can be formed by the independent structure of stator coil.All groups can form the identical number of phases, for example, be 3 mutually or 6 phases, or form the different numbers of phases, for example, be respectively 3 mutually and 6 phases.This makes to be attached to electrically connecting whenever necessary of transducer, can not switch between on the same group, or make each group be attached to different conversion modules.The sum mutually of each group is determined the number of phases electrically connecting between generator and transducer.The phase of each group or winding can be relatively adjacent stator coil and/or relatively magnetic pole or the rotor coil setting of rotor, to form balanced structure.Phase angle between two adjacent set can be definite by the sum of stator winding or phase, for example 30 °, 40 °, 60 °, 72 °, 90 ° or 120 °.Extra winding can be set, the fail safe of generator is improved.
Coefficient of mutual inductance between this adjacent phase that makes to form in stator reduces, thereby has reduced the induced current between these adjacent phases.This reduces the harmonic distortion producing at generator, because the frequency of exciting field electric current rises.
Transducer can be made up of one or more conversion modules, and these modules are electrically coupled to the sets of stator coils of generator.Each conversion module can comprise several rectification circuits, and these rectification circuits are arranged on generator end and can are direct current by the alternating current rectification that is derived from generator.Each rectification circuit can be electrically coupled to a wherein phase of coil groups, and this coil groups is connected to conversion module.The electrical network end of conversion module can pass through several, for example: 3, negative circuit is electrically coupled to electrical network end, and these negative circuits are arranged on electrical network end.
This makes transducer be set to modular converter, and wherein electric power output is assigned on each independent conversion module, thereby reduces the electric power output of each conversion module.This makes each conversion module be arranged to low pressure or middle die block, and the size of each module and weight are reduced.The fail safe of transducer can improve by least two spare modules are set.
According to an embodiment, transducer is electrically coupled at least one controller, and this controller is for controlling the operation of transducer, and its middle controller comprises at least one submaster controller, and this submaster controller is electrically coupled to transducer and for controlling at least one end of transducer.
The operation of transducer can be by the controller that is electrically coupled to transducer, and based on one or more parameter control or drivings that measure or sense.The rectification circuit that is arranged on generator end can be attached to submaster controller, this submaster controller is based on one or more parameters, for example be transferred to or from angular speed or torque or other relevant parameters of the curtage of generator, the speed of the wind comes from, armature spindle, to control or to drive these operations.This makes rectification circuit keep near sinusoidal ripple, thereby improves the efficiency that drives generator.
Transducer can comprise that several are arranged on the negative circuit of electrical network end, and this negative circuit is converted to the alternating current that can mate power network current for the direct current (DC) of spontaneous motor side in future.Negative circuit can be attached to another submaster controller, this submaster controller can be based on one or more parameters, for example be transferred to or from the curtage of electrical network, grid power specification, reference power or other relevant parameters by electrical network code definition, to control or to drive the operation of these circuit.Each negative circuit can comprise transistor, for example insulated gate bipolar transistor or diode.Keeping when high-power characteristic, this (idle and meritorious) power that makes to supply with electrical network can be controlled.
According to a specific embodiments, controller is electrically coupled to switching device shifter, and this switching device shifter is electrically coupled to each conversion module, and the wherein operation of this controller control switching device shifter.
Each conversion module can be electrically coupled to switching regulator or contact switching device shifter, and its middle controller is controlled separately the running of these switches or contact.Switching device shifter can be arranged between generator windings and conversion module, and/or is arranged between conversion module and electrical network.This makes in the time mistake in wind turbine or emergency being detected, for example one of them rectification circuit short circuit, and controller can cut off transducer.Controller can be set to control signal to be sent to another controller or submaster controller, and this controller or submaster controller are opened the variable propeller pitch device of wind turbine blade afterwards, and the variablepiston part propeller pitch angle of blade is adjusted or be parallel with Plane of rotation like this.Then, controller can be set to: can disconnect with vicious conversion module, and switching is connected to remaining conversion module.Then, controller can be controlled parameter by least one, and for example reference power is arranged to another reduced value, for example, between 40 ?60% of nominal power output valve, is preferably 50%.Then, other controller or submaster controller are opened the variable propeller pitch device of wind turbine blade, make the control signal of this device based on receiving from controller move or make vane propeller-changing distance or make blade parallel with Plane of rotation.
This makes to remove defective conversion module, and is replaced by the new conversion module of the operation of also not carrying out wind turbine.This has reduced downtime, and in the situation that conversion module breaks down therein, allows the simple and fast maintenance to transducer.
According to a specific embodiments, wherein one group of stator coil is set, they form heterogeneous connection like this, and are electrically coupled to rectification circuit, and this rectification circuit is arranged in one of them generator end of conversion module.
This makes electrically connecting between generator and transducer form single heterogeneous connection, comprises more than three-phase, be preferably 6,9,12 or these numerical value in any number of phases connect.Stator coil is arranged on stator outward flange, and it is towards the rotor outward flange that rotor coil is set.Stator and rotor coil are separated from one another by predetermined air gap, and magnetic field intensity is promoted like this.Stator comprises several stator coils and/or magnetic pole, and it is interconnected with one another, and to form several windings, the number of this winding is corresponding with the number of phases in heterogeneous connection.Each rectification circuit of the transducer in the future AC rectification of spontaneous motor becomes direct current, is then delivered to direct current link.Each independent rectification circuit is electrically connected to a how joining wherein phase.Rectification circuit can be set to by transistor, for example insulated gate bipolar transistor or diode composition.
By winding that in stator, interconnective stator coil forms can, for example at a predetermined angle, and/or the rotor coil in magnetic pole or rotor is positioned opposite to each other relatively, to form balanced structure.Phase angle between adjacent winding can be 30 °, 40 °, 60 °, 72 °, 90 ° or 120 °.This reduces the coefficient of mutual inductance between the adjacent phase of stator, thereby reduces the induced current between adjacent phase.This harmonic distortion that also makes generator produce reduces, because heterogeneous connection is risen the frequency of pulsating field electric current.
According to an embodiment, stator comprises some grooves, and stator coil is arranged in this groove, and its coil is set at least two-layer.
This makes stator coil in groove, be set to multilayer, so that the phase shift between phase or the winding in stator coil structure reduces.Stator coil can be arranged so that every phase of generator or every winding are positioned at every one deck.Be arranged on the reversed in order of the phase of ground floor or the order of winding and the second layer.If stator coil setting is more than two-layer, the order of so every one deck will be different from, or is in reverse to the order of adjacent layer, or stator coil can be set to have the combination of same sequence.
According to an embodiment, direct current link is electrically connected in transducer and generates electricity between pusher side output and grid side input.
The direct current link forming with the form of one or more capacitors can be arranged between the two ends of transducer.This makes power storage in capacitor, and the voltage levvl that is delivered to like this electrical network end can remain on the level of approximately constant and voltage fluctuation is reduced.This makes wind turbine can use soft start to be attached to electrical network, because before wind turbine is attached to electrical network, capacitor can be charged to required voltage levvl.Measuring unit can be attached to direct current link and controller, and wherein this measuring unit can be used for the voltage levvl of measure link.Voltage levvl can be used for controlling the operation of transducer generator end and electrical network end.The protective circuit of chopper circuit formula can be attached to direct current link, to protect drive system from grid short circuit.
According to an embodiment, transformer comprises primary side and primary side, and this transformer is electrically connected between transducer and electrical network.
Transformer can be used for rising or reduces the voltage levvl of transducer, to mate line voltage.Tranformer protection drive system is away from any electric network fault that damages drive system.The filter circuit of one or more capacitors and/or inductor can be arranged between transducer and transformer, and/or between generator and transducer.This makes to supply with harmonic wave in the output current of electrical network and the fluctuation of output current reduces.
Object of the present invention also can realize by the method for operation wind turbine, it is characterized in that:
?controller optionally with transducer detect that vicious certain part disconnects, and switch and be connected to the remainder of transducer; And
?open connected variable propeller pitch device, the adjustable blade-section of propeller pitch angle is met to air intake direction.
This method makes wind turbine under emergency before again entering running status, can depart from fast operation, thereby reduce the downtime of wind turbine.In the time emergency being detected, controlled area disconnects (cut-out) by transducer from electrical network.Emergency can be one of them conversion module short circuit.Then controller is opened the variable propeller pitch device of wind turbine blade, and the propeller pitch angle adjustable part variable pitch of blade or meet to air intake.Controller also can be opened mechanical brake and/or use generator, by energy is returned to generator, to brake wind turbine blade.Then again open variable propeller pitch device by controller, and blade pitch angle adjustable part variable pitch or meet to air intake.If controller adopts soft start, when direct current link charges to predetermined voltage level, first transducer can be connected again so.
According to a specific embodiments, controller changes at least one and controls parameter, for example reference power, and this parameter reaches another predetermined value for the operation of controlling wind turbine, for example 40 of nominal power output valve ?between 60%, lower than the value of its normal operation period.
In the time emergency being detected, wind turbine moves under lower running status, and in wind turbine, for example the mechanical stress in its drive system and tension force all will reduce like this.This can complete in the following manner: when using controller while detecting that conversion module is wrong, again connect (connection) to electrical network at remaining conversion module, disconnect being connected of this vicious conversion module and electrical network.Then controller will be set at least one for controlling the control parameter of wind turbine operation, reaches another lower value.
According to a specific embodiments, control parameter is reference power, and its predetermined value be nominal power output valve 40 to 60% between.
Controlling parameter can be reference power, maximum wind speed, power efficiency or other the suitable control parameters of allowing.In a preferred embodiment, reference power is set as reduced value, for example 40 of nominal power output valve ?between 60%, be preferably 50%.
Brief description of the drawings
The present invention is only by embodiment, and reference will be made to the accompanying drawings, wherein:
Fig. 1 shows the embodiment of wind turbine;
Fig. 2 shows the embodiment of generator, and this generator is attached to electrical network and rotor hub;
Fig. 3 shows the first embodiment of drive system, and this drive system is arranged in wind turbine;
Fig. 4 shows the second embodiment of drive system, and this drive system is arranged in wind turbine;
Fig. 5 shows the 3rd embodiment of drive system, and this drive system is arranged in wind turbine;
Fig. 6 shows the embodiment of winding construction, and this winding construction is arranged in stator;
Fig. 7 shows the chart of electromagnetic torque, and this electromagnetic torque produces in generator; And
Fig. 8 shows in the time transducer fault being detected, controls the flow chart of the embodiment method of the operation of wind turbine.
Hereinafter, will describe one by one accompanying drawing, different parts and the position seen in the accompanying drawings will be numbered, and same parts and position in different accompanying drawings will be marked with identical numbering.All parts and position in concrete a certain accompanying drawing, not all must discuss with this accompanying drawing in the lump.
Embodiment
Fig. 1 shows the embodiment of wind turbine 1, comprises wind turbine tower 2 and cabin 3, and this cabin 3 is arranged on the top of wind turbine tower 2.Wind turbine tower 2 can comprise a joint or more piece tower joint, and this tower joint interconnects assembling on top each other.Rotor hub 4 is rotatably mounted to cabin 3 by armature spindle.One or more pieces wind turbine blades 5 are mounted to rotor hub 4, and rotor hub 4 is connected with axle, and this axle stretches out from the center of rotor hub.Two or three wind turbine blades 5 can be mounted to rotor hub 4, and wherein wind turbine blade 5 forms Plane of rotation.Wind turbine tower 2 can be arranged on ground 6, and this ground 6 is raised on ground level 7.
Fig. 2 shows the embodiment of generator 10, and this generator 10 is to be attached to electrical network 11 and rotor hub 4 with the form of high-temperature superconductor (HTS) generator.Rotor hub 4 can be attached to generator 10, and this generator 10 is arranged on 3 inside, cabin by rotatable armature spindle 12.Armature spindle 12 is defined as rotation axis, and rotor hub 4 and wind turbine blade 5 are around this axle rotation.Wind turbine blade 5 is mechanical energy by the wind-force kinetic transformation that enters Plane of rotation, and mechanical energy is sent to generator 10 by armature spindle 12.Mechanical energy is converted into electric energy by generator 10, and electric energy transfer is to transducer 13.
Stator coil in stator 15 can be set, make it form the winding of preset number, each winding defines a phase, and this is electrically coupled to the rectification circuit in transducer 13 that is arranged on of preset number mutually.Transducer 13 can be used for the electric power of conversion from stator 15, makes the electrical network code defined specification (frequency, phase, voltage and current) of its coupling for electrical network 11.
Fig. 3 shows the first embodiment of drive system 18, and this drive system 18 is arranged in wind turbine 1.Drive system 18 can comprise rotor, and this rotor is made up of wind turbine blade 5 and rotor hub 4, and rotor hub 4 passes through armature spindle 12 mechanical attachment to generator 10.Then generator 10 is electrically coupled to the generator end 19 of transducer 13, and then this transducer 13 is electrically coupled to electrical network end 20 by link 21.Then electrical network end 20 is electrically coupled to transformer 22, and then this transformer 22 is electrically coupled to electrical network 11.
In stator 15, each independently stator coil can be set to multiple interconnecting, and makes it form multiple windings.Each winding is determined a phase of generator 10.Stator coil can be set, make it form heterogeneous structure, comprise that the 6 phase 23(that determined by 6 windings only illustrate wherein three-phase).Electrically connecting between generator 10 and transducer 13 can be set to heterogeneous connection, is attached to phase 23 and the rectification circuit of generator 10, and this rectification circuit is arranged on the generator end 19 of transducer 13.The winding being interconnected to form by stator coil in stator 15 can be positioned opposite to each other, to form balanced structure.Phase angle between two adjacent windings can be 0 °, 30 ° or 60 °, depends on its desired structure.
The generator end 19 of transducer 13 can be set to heterogeneous structure, and it comprises multiple rectification circuits, and this rectification circuit is corresponding to the winding number of generator 10.Transducer 13 can be set to omnidistance transducer.Generator end 19 can comprise 6 rectification circuits, and each rectification circuit is electrically connected to a wherein phase of 23 mutually.Each rectification circuit of transducer 13 can be used for the AC rectification of spontaneous motor 10 in the future and converts direct current to.Rectification circuit can be by transistor, for example insulated gate bipolar transistor composition, and it comprises Part I and Part II, Part I is connected with Part II again.Part I can be used for the positive half cycle rectification to alternating current, and Part II can be used for the negative half period rectification to alternating current.Each can be connected to the two-part place that interconnects of rectification circuit mutually.
Then, the delivery outlet of the first and second parts is electrically connected to link 21, makes rectified current export link 21 to.Link 21 is direct current link, and it can be set to the accumulator of one or more storage capacitor formulas.Link 21 can be used for keeping for the voltage levvl toward electrical network end 20 level at approximately constant, and reduces the electromagnetic torque voltage fluctuation of generator.
Then, smooth direct current is transported to electrical network end 20, and this electrical network end 20 comprises several negative circuits.Negative circuit can be used for transmission to be converted into for the alternating current toward electrical network 11 from the direct current of link 21.Electrical network end 20 can be used for direct current to be converted into the voltage and current of the specification of coupling electrical network 11.Electrical network end 20 can comprise three negative circuits, and it is corresponding to the quantity of the phase 24 of electrical network 11.Negative circuit can be by transistor, for example insulated gate bipolar transistor composition, and it comprises Part III and Part IV, Part III is connected with Part IV again.Part III can be used for producing the positive half cycle of alternating current, and Part IV can be used for producing the negative half period of alternating current.Each can be connected to the two-part place that interconnects of negative circuit mutually.
Fig. 4 shows the second embodiment of drive system 25, and this drive system 25 is arranged in wind turbine 1.Drive system 25 is different from the drive system 18 of Fig. 3 in generator 10 ' and transducer 13 ' structure.
The stator coil of stator 15 can be set to have at least two groups of stator coils 26 and 27, and wherein each group 26,27 comprises the winding of predetermined number.Every group of stator coil 26,27 can be set to three independent windings.Winding sum in sets of stator coils 26,27 is determined the number of phases between generator 10 ' and transducer 13 ', and in this embodiment, the number of phases is 6.Each winding has been determined a phase of sets of stator coils 26,27.In stator 15, the independent winding being made up of stator coil can be positioned opposite to each other, to form balanced structure.Phase angle between two adjacent windings can be 0 °, 30 ° or 60 °, and this depends on its desired structure.Sets of stator coils 26,27 can be set up, and makes the synthetic group mutually of its composition, has increased like this safety and reliability of wind turbine 1.
The phase of each sets of stator coils 26,27 can electrically connect by having with two groups of sets of stator coils 26, the 27 identical numbers of phases, is electrically coupled to transducer 13 '.Transducer 13 ' can be set to modularization converter, and this transducer comprises at least two conversion modules 29,30.Conversion module 29,30 is electrically connected to respectively the phase of sets of stator coils 26,27.Each conversion module 29,30 can comprise the generator end 31,32 that is electrically connected to electrical network end 33,34 by link 35,36.Generator end 31,32 can comprise identical with the number of phases of each sets of stator coils 26,27, for example the rectification circuit of 3.Each rectification circuit in conversion module 31,32 can be used for the AC rectification of spontaneous motor 10 ' in the future and converts direct current to.Rectification circuit can be by transistor, for example insulated gate bipolar transistor composition, and it comprises Part I and Part II, Part I is connected with Part II again.Part I can be used for the positive half cycle rectification to alternating current, and Part II can be used for the negative half period rectification to alternating current.Each phase of sets of stator coils 26,27 can be connected to the two-part place that interconnects of rectification circuit.Electrical network end 33,34 and link 35,36 can have the structure identical with link 21 with electrical network end 20.
Fig. 5 shows the 3rd embodiment of drive system 37, and this drive system 37 is arranged in wind turbine 1.Drive system 37 is different from the drive system 25 of Fig. 4, wherein generator 10 " comprise three groups mutually 26,27,38, and transducer 13 " comprise three conversion modules 31,32,39.
The winding group 38 being made up of stator coil can have the structure identical with other sets of stator coils 26,27, and comprises the identical number of phases.Conversion module 39 can have the structure identical with other conversion modules 29,30.Link 42 can have the structure identical with other links 35,36.In optional embodiment, tertiary coil group 38 for example can comprise, compared with the more winding of other sets of stator coils 26,27 or phase, 6 phases.The generator end 40 of the 3rd conversion module can be arranged so that the quantity of rectification circuit is identical with the quantity of tertiary coil group 38, and for example quantity is 6.Electrical network end 41 can have the structure identical with other electrical network ends 33,34.The 3rd link 42 can have the structure different from other links 35,36.This makes to drive the number of path and phase to be adapted to the required design of drive system.
Fig. 6 shows the embodiment of the winding construction in stator 15, and wherein winding construction is arranged in the groove 43 of stator 15.Stator 15 can comprise some grooves 43, and stator coil 44 is arranged on wherein.Stator coil 44 is placed in groove 43, makes it form several windings, and each winding has been determined generator 10,10 ', 10 " phase.Stator coil 44 can be set at least two-layer; Ground floor 45a and second layer 45b.The number of windings that is placed in a layer 45a, 45b can be corresponding to generator 10,10 ', 10 " in the number of phases that arranges, or wherein a group of sets of stator coils 26,27,38.As shown in Figure 6, be arranged on the winding of every one deck 45a, 45b or the order of stator coil 44 can with the reversed in order of adjacent layer.By winding being divided into two- layer 45a, 45b or multilayer, make the winding of stator 15 or the width constriction of phase.Fig. 6 shows 6 phases that are divided into two parts or auxiliary winding, be labeled as 1 ?6, wherein this auxiliary winding is labeled as, and for example 1, is defined as generator 10,10 ', 10 " one of them winding or phase.
Fig. 7 shows the chart of the electromagnetic torque that generator 10 produces.Chart shows the generator 10, the 10 ' electromagnetic torque 46 producing that comprise 6 phases.Chart also shows the electromagnetic torque 47 of the conventional electric generators generation that comprises three-phase.
As shown in the figure, conventional electric generators produces has the electromagnetic torque 47 of catastrophic fluctuation, this fluctuation be defined as Feng ?peak value, this fluctuation causes forming harmonic distortion at generator.The exchange frequency of the electromagnetic torque 47 that as shown in the chart, conventional electric generators three-phase forms is relatively low.According to generator 10,10 ', 10 of the present invention " produce electromagnetic torque 46, as shown in the chart, wherein fluctuate Feng ?peak reduction because electromagnetic torque is distributed in and multiplely goes up mutually.The value of ripple peak ?crest of fluctuation and harmonic distortion can be according to generators 10,10 ', 10 " Structure Decreasing up to 40% or more.As shown in the chart, because the number of phases increases, generator 10,10 ', 10 " also increase the switching frequency of electromagnetic torque 46.
Fig. 8 shows in the time transducer 13 ' fault being detected, controls the flow chart of the exemplary method of the operation of wind turbine 1.The controller that is electrically coupled to controller module 31,32,39 can be electrically coupled to switching device shifter (not shown), and this switching device shifter is connected to each conversion module 31,32,39.Switching device shifter can be based on transferring to controller control signal, switch on or off exchanger module 31,32,39.Switching device shifter can be arranged on generator 10 ', 10 " sets of stator coils 26,27,38 and conversion module 31,32,39 between, and/or between conversion module 31,32,39 and electrical network 11.Controller can be electrically coupled to another controller, and this another controller is used for the propeller pitch angle of the variablepiston part of controlling wind turbine blade 5.One or more measuring units can be used for monitoring generator 10 ', 10 " and/or the practice condition of conversion module 31,32,39.
When the controller of wind turbine 1, in step 48, one or more mistakes or fault in conversion module 31,32,39 detected, controller sends control signals to switching device shifter so.Then in step 49, switching device shifter is unlocked, and transducer 13 ' is disconnected from electrical network 11.Then another control signal is sent to another controller, and this another controller is connected to the pitch-variable system of wind turbine blade 5.Then in step 50, pitch-variable system is opened the variable propeller pitch device of wind turbine blade 5, and variablepiston part is not met to air intake direction.Then in step 51, wind turbine 1 can stop, and for example, this can be by using one or more brakes to realize, and this brake is connected to the rotor of drive system 25,37.Controller can, by energy, send back generator from other power supplys or electrical network 11, makes generator 10 ', 10 " can be used for brake rotors.
Then,, in step 52, when mistake or fault being detected at conversion module 31,32,39, controller optionally cuts off conversion module 31,32,39.Then all the other conversion modules 31,32,39 are accessible, make transducer 13 ' again be electrically connected to electrical network 11.Controller can start with soft start the operation of wind turbine 1, and wherein, in the time that link 35,36,42 is charged to predeterminated level, transducer 13 ' first accesses.
Then, in step 53, controller can change the value of one or more control parameters, and this control parameter, under normal operation mode, is controlled wind turbine 1.Control parameter and can be reference power.Reference power can be set as nominal value under normal operation mode 90 ?between 100%.Controller can, in the time of emergency, for example, when mistake or fault appear in one of them conversion module 31,32,39, will be controlled setting parameter for another value, and this value can be lower than the value under normal operation mode.In conversion module 31,32,39 one of them fault or wrong in the situation that, reference power can be set as nominal value 40 ?between 60%.
Then, controller can send a control signal to other controllers, and other controllers are connected to the variablepiston part of wind turbine blade 5.Then in step 54, pitch-variable system is opened the variable propeller pitch device of wind turbine blade 5, and variablepiston part is met again to wind direction.Controller can also unclamp the brake that clamps rotor.Then, in step 55, wind turbine enters running status again, still, in the running status of reduced levels, makes in wind turbine, and for example the mechanical stress in drive system and tension force all reduce.
Claims (10)
1. a wind turbine (1), comprising:
?wind turbine tower (2), described pylon has top and bottom;
?cabin (3), described cabin is arranged on the top of wind turbine tower (2);
?rotor hub (4), described rotor hub is rotatably mounted to cabin (3);
?one or more pieces wind turbine blades (5), it is upper that described wind turbine blade is arranged on rotor hub (4), wherein wind turbine blade (5) is determined Plane of rotation;
?axle (12), described axle is attached to described rotor hub (4);
?generator (10), described generator is attached to described axle (12), wherein said generator (10) comprises rotor (16), described rotor relative stator (15) rotatably arranges, wherein said rotor (16) comprises at least one superconductive rotor coil, and described stator (15) comprises at least one superconduction stator coil, wherein, in the time that rotor (16) rotates, described superconductive rotor coil and described stator coil have interactional magnetic field to cause the electric current of described stator coil; And
?at least one transducer (13), described transducer is electrically coupled to described generator (10), wherein said transducer (10) comprises electrical network end (20) and generator end (19), described electrical network end is electrically connected to generator end (19), described electrical network end (20) has the electrical network (11) of default electrical network code for being electrically coupled to, and described generator end (19) is for being electrically coupled to described generator (10), wherein said transducer (13) is for the output power of conversion generator (10), make described output power mate the electric power of described electrical network (11),
Wherein, the stator coil of generator (10) is set to form two or more sets stator coils (26,27,38), to reduce the transient electromagnetic brake torque with respect to generator (10) nominal electromagnetic torque, wherein each group stator coil (26,27,38) forms the default number of phases;
It is characterized in that:
Described transducer (13 ') comprises two or more conversion modules (29,30,39), each described module comprises generator end (31,32,40) and electrical network end (33,34,41), wherein the generator end (31,32,40) of each module (29,30,39) comprises that several rectification circuits, described rectification circuit are electrically coupled to the wherein one group of stator coil (26,27,38) being arranged in generator (10 ', 10 ").
2. wind turbine according to claim 1, it is characterized in that, described transducer (13) is electrically coupled at least one controller, described controller is used for controlling the operation of transducer (13), wherein said controller comprises at least one submaster controller, and described submaster controller is electrically coupled to transducer (13) and for controlling at least one end (19,20) of transducer (13).
3. wind turbine according to claim 2, is characterized in that, described controller is electrically coupled to switching device shifter, and described switching device shifter is electrically coupled to each conversion module (29,30,39), and the operation of wherein said controller control switching device shifter.
4. wind turbine according to claim 1, it is characterized in that, wherein stator coil (26,27,38) described in a group is set, make it form heterogeneous connection (23), described heterogeneous connection is electrically coupled to the rectification circuit of one of them generator end (31,32,40) that is arranged on conversion module (13).
5. wind turbine according to claim 1, it is characterized in that, described stator (15) comprises some grooves (43), and described stator coil (44) is arranged in described groove (43), and wherein said coil (44) is arranged at least two-layer (45a, 45b).
6. wind turbine according to claim 1, is characterized in that, direct current link (21) is electrically coupled to the interior generator delivery outlet of transducer (13) (19) and electrical network input port (20).
7. wind turbine according to claim 1, is characterized in that, transformer (22) comprises primary side and primary side, and this transformer is electrically coupled to transducer (13) and electrical network (11).
8. operation is according to a method for the wind turbine (1) described in aforementioned arbitrary claim, and wherein the operation of wind turbine (1) comprises the following steps:
?step 48, use one or more measuring units to detect the mistake of wind turbines (1), described measuring unit is electrically coupled to and is arranged on the inner controller of wind turbine (1);
?step 49, open switching device shifter, described switching device shifter is electrically coupled to the transducer (13) of wind turbine (1) by controller, make described transducer (13) isolate from electrical network (11);
?step 50, open variable propeller pitch device, described variable propeller pitch device is attached at least a portion of wind turbine blade (5), and variablepiston blade-section is met to air intake direction;
It is characterized in that:
?step 52, described controller optionally cuts off certain part of transducer (13), described part detects mistake, and is switched to the remainder of transducer (13); And
?step 54, open connect variable propeller pitch device, variablepiston blade-section is met to air intake direction.
9. the method for operation wind turbine according to claim 8 (1), it is characterized in that, in steps 53, described controller changes at least one and controls parameter, the operation that described control parameter is used for controlling wind turbine (1) reaches another preset value, and described predetermined value is lower than its normal runtime value.
10. method according to claim 9, is characterized in that, described control parameter is reference power, and its predetermined value be nominal power output 40 to 60% between.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA201270821 | 2012-12-21 | ||
| DK201270821A DK177684B1 (en) | 2012-12-21 | 2012-12-21 | Wind turbine having a HTS generator with a plurality of phases |
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| Publication Number | Publication Date |
|---|---|
| CN103887812A true CN103887812A (en) | 2014-06-25 |
| CN103887812B CN103887812B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310626358.0A Active CN103887812B (en) | 2012-12-21 | 2013-11-29 | There is the wind turbine of heterogeneous high-temperature superconducting generator |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9541064B2 (en) |
| EP (1) | EP2747258A3 (en) |
| JP (1) | JP5785243B2 (en) |
| CN (1) | CN103887812B (en) |
| DK (1) | DK177684B1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2014122628A (en) | 2014-07-03 |
| EP2747258A2 (en) | 2014-06-25 |
| CN103887812B (en) | 2016-08-17 |
| DK177684B1 (en) | 2014-03-03 |
| US20140175796A1 (en) | 2014-06-26 |
| US9541064B2 (en) | 2017-01-10 |
| JP5785243B2 (en) | 2015-09-24 |
| EP2747258A3 (en) | 2017-10-11 |
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